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Abstract:

A energy dissipating metal plate joins a pair of target members and
exhibits energy dissipating performance corresponding to a relative
displacement between the target members. The energy dissipating metal
plate includes: a first joint part to be joined to one of the target
members; a second joint part to be joined to other of the target members;
and vibration dissipating parts which are provided on a transmission path
of tensile force and compression force between the first joint part and
the second joint part, and which have slits. Each of the first joint part
and the second joint part is formed in a strip shape substantially
parallel to a direction of the relative displacement.

Claims:

1. A energy dissipating metal plate which joins a pair of target members
and which exhibits energy dissipating performance corresponding to a
relative displacement between the target members, the energy dissipating
metal plate comprising: a first joint part to be joined to one of the
target members; a second joint part to be joined to other of the target
members; and vibration dissipating parts which are provided on a
transmission path of a tensile force and a compression force between the
first joint part and the second joint part and which have slits, wherein
each of the first joint part and the second joint part is formed in a
strip shape substantially parallel to a direction of the relative
displacement.

2. The energy dissipating metal plate according to claim 1, wherein the
energy dissipating metal plate is a single plate to be located between
the target members so that a front surface comes in contact with the one
of the target members while a back surface comes in contact with the
other of the target members.

3. The energy dissipating metal plate according to claim 1, wherein the
first joint part is provided in a form of two lines via the vibration
dissipating part, in substantially axisymmetric positions centered on the
second joint part.

4. The energy dissipating metal plate according to claim 3, wherein: when
seen along the direction of the relative displacement, a length of the
first joint part is longer than a length of the second joint part; and
end parts of the first joint part in the form of the two lines are
joined.

5. The Energy dissipating metal plate according to claim 1, wherein the
energy dissipating metal plate is precipitation-hardened or
trip-processed so that a ratio of a yield proof stress to a maximum proof
stress is equal to or more than 4/5.

6. The energy dissipating metal plate according to claim 1, wherein at
least one of the first joint part and the second joint part is reinforced
along the direction of the relative displacement by a reinforcement
member.

7. The energy dissipating metal plate according to claim 1, wherein: a
first insertion hole into which a first fastener that joins the first
joint part to the one of the target members is inserted is formed in the
first joint part, while a second insertion hole into which a second
fastener that joins the second joint part to the other of the target
members is inserted is formed in the second joint part; and at least one
of the first insertion hole and the second insertion hole is a long hole
which extends in a direction substantially orthogonal to the direction of
the relative displacement.

8. The energy dissipating metal plate according to claim 1, wherein: a
pair of the vibration dissipating parts is provided adjacent to both
sides of the second joint part; a pair of the first joint parts are
further provided adjacent to the outer side of the vibration dissipating
parts; and the transmission path is a path that connects the first joint
part and the second joint part via the vibration dissipating parts.

9. The energy dissipating metal plate according to claim 1, wherein: a
pair of the vibration dissipating parts is provided adjacent to both
sides of the second joint part; a pair of extension parts that extend
from the outer side of the vibration dissipating parts along the
direction of the relative displacement are further provided; the first
joint part is provided so as to be continuous with the extension parts;
and the transmission path is a path that connects the second joint part,
the vibration dissipating parts, the extension parts, and the first joint
part.

10. A building structure comprising the energy dissipating metal plate
according to any one of claim 1 to claim 9.

11. The building structure according to claim 10, further comprising a
continuous footing and a foundation of a building upper frame, wherein,
in a state where the energy dissipating metal plate is located between
the continuous footing and the foundation, the first joint part is joined
to either one of the continuous footing and the foundation, and the
second joint part is joined to other of the continuous footing and the
foundation.

12. The building structure according to claim 10, further comprising a
wall frame and a beam of a floor, wherein, while the second joint part is
joined to the wall frame, the first joint part is joined to the beam.

13. The building structure according to claim 10, further comprising an
energy dissipating fuse which is arranged within a section formed by a
plurality of steel pipe pillars and which has a plurality of braces,
wherein, the energy dissipating metal plate is provided at least one of a
joint location between the steel pipe pillars and the braces and a joint
location between the braces.

Description:

TECHNICAL FIELD

[0001] The present invention relates to an energy dissipating metal plate
which joins a pair of target members and which exhibits energy
dissipating performance corresponding to a relative displacement between
the target members, and a building structure provided with the energy
dissipating metal plates.

BACKGROUND ART

[0002] In recent years, in response to increasing awareness about disaster
prevention, there are an increasing number of building structures such as
houses and apartments that employ a damage control structure for
suppressing seismic shocks at a time of an earth quake with use of an
energy dissipating fuse. As an example of the energy dissipating fuse
used for the type of energy dissipating structure, a number of building
structures employ a steel fuse which dissipates vibration energy in the
hysteresis due to yielding and plasticizing of a steel material when the
steel material is compressed or tensiled, since it exhibits a high level
of energy dissipating performance at low cost. Among steel fuses, a
buckling restricted brace, which resists axial force, is a most
prevailing steel fuse since it has a simple mechanism and can be designed
easily. Examples of steel fuses other than the buckling restricted brace
include a fuse that uses a base plate and a joint metal.

[0003] For example, Patent Document 1 discloses a damage control structure
in which a base plate fuse is arranged between a pedestal part of pillar
and a foundation portion. When a tensile force acts on the pillar, a
flexural yielding or a shear yielding of the base plate occurs. The
tensile force occurring in the pedestal part of pillar is dissipated by
energy of deformation hysteresis at the time, and an energy dissipating
functionality being exhibited.

[0004] Moreover, Patent Document 2 discloses a technique such that the
fuse steel plate is a shape that flexural-shear-yields so that even if
the fuse steel plate receives a cyclic load after having shear-yielded,
increase in the shear proof stress thereof can still be suppressed.

[0005] Incidentally, in order to improve damage control performance of a
building structure part, it is effective to utilize relative displacement
between target members for dissipating vibrations. Therefore, other than
the above fuse mechanism, it may be considered that with use of relative
displacement between a foundation and a continuous footing or between a
wall panel layer and a floor panel layer, the fuse is moved to dissipate
vibrations and dissipate vibration energy. However, techniques disclosed
in Patent Documents 1 and 2 have a problem in that they are not premised
to be arranged in an extremely narrow gap such as the gap between the
foundation and the continuous footing and/or the gap between the wall
panel layer and the floor panel layer, and therefore, vibration energy in
the type of narrow place cannot be dissipated.

[0006] If a part of a fuse is inserted between the target members that
displace relatively to each other, a rigidity of inserted portion of the
fuse becomes higher than that of non-inserted portion of the fuse. As a
result, while a relative displacement of the part in which the fuse is
inserted becomes smaller, a relative displacement of the part in which
the fuse is not inserted becomes greater, and therefore, the vibration
energy may not be efficiently dissipated in some cases. Therefore, it is
important to insert the fuse evenly across the entire portion that would
have relative displacement therein.

[0009] Consequently, the present invention takes into consideration the
above problems, with an object of providing: an energy dissipating metal
plate which is joined between a pair of target members and which exhibits
an energy dissipating performance corresponding to a relative
displacement between the target members, wherein, in particular, the
energy dissipating metal plate can be arranged in an extremely narrow gap
and can be applied to various locations of a building structure; and a
building structure which uses the energy dissipating metal plate.

Solution to Problem

[0010] In order to solve the above problems and achieve the above object,
the present invention employs the following configurations. That is to
say:

[0011] (1) The energy dissipating metal plate according to the present
invention is an energy dissipating metal plate which joins a pair of
target members and which exhibits energy dissipating performance
corresponding to a relative displacement between the target members, the
energy dissipating metal plate including: a first joint part to be joined
to one of the target members; a second joint part to be joined to other
of the target members; and vibration dissipating parts which are provided
on a transmission path of a tensile force and a compression force between
the first joint part and the second joint part, and which have slits,
wherein each of the first joint part and the second joint part is formed
in a strip shape substantially parallel to a direction of the relative
displacement.

[0012] (2) The energy dissipating metal plate according to (1) may be a
single plate to be located between the target members so that a front
surface comes in contact with one of the target members while a back
surface comes in contact with the other of the target members.

[0013] (3) In the energy dissipating metal plate according to (1), the
first joint part may be provided in a form of two lines via the vibration
dissipating part, in substantially axisymmetric positions centered on the
second joint part.

[0014] (4) In the energy dissipating metal plate according to (3), a
configuration such that: when seen along the direction of the relative
displacement, a length of the first joint part is longer than a length of
the second joint part; and the end parts of the first joint parts in the
form of two lines are joined, may be employed.

[0015] (5) In the energy dissipating metal plate according to (1), the
energy dissipating metal plate may be precipitation-hardened or
trip-processed so that a ratio of yield proof stress to a maximum proof
stress is equal to or more than 4/5.

[0016] (6) In the energy dissipating metal plate according to (1), at
least one of the first joint part and the second joint part may be
reinforced along the direction of the relative displacement by a
reinforcement member.

[0017] (7) In the energy dissipating metal plate according to (1), a
configuration such that: a first insertion hole into which a first
fastener that joins the first joint part to the one of the target members
is inserted is formed in the first joint part, while a second insertion
hole into which a second fastener that joins the second joint part to the
other of the target member is inserted is formed in the second joint
part; and at least one of the first insertion hole and the second
insertion hole is a long hole which extends in a direction substantially
orthogonal to the direction of the relative displacement, may be
employed.

[0018] (8) In the energy dissipating metal plate according to (1), a
configuration such that: a pair of the vibration dissipating parts are
provided adjacent to both sides of the second joint part; a pair of the
first joint parts are further provided adjacent to the outer side of the
vibration dissipating parts; and the transmission path is a path that
connects the first joint part and the second joint part via the vibration
dissipating parts, may be employed.

[0019] (9) In the energy dissipating metal plate according to (1), a
configuration such that: a pair of the vibration dissipating parts are
provided adjacent to both sides of the second joint part; a pair of
extension parts that extend from the outer side of the vibration
dissipating parts along the direction of the relative displacement are
further provided; the first joint part is provided so as to be continuous
with the extension parts; and the transmission path is a path that
connects the second joint part, the vibration dissipating parts, the
extension parts, and the first joint part, may be employed.

[0020] (10) The building structure according to the present invention is
provided with the energy dissipating metal plate according to any one of
(1) to (9) above.

[0021] (11) In the building structure according to (10), a configuration
such that: the building structure further includes a continuous footing
and a foundation of a building upper frame; and in a state where the
energy dissipating metal plate is located between the continuous footing
and the foundation, the first joint part is joined to either one of the
continuous footing and the foundation, and the second joint part is
joined to the other of the continuous footing and the foundation, may be
employed.

[0022] (12) In the building structure according to (10), a configuration
such that: the building structure further includes a wall frame and a
beam of a floor; and while the second joint part is joined to the wall
frame, the first joint part is joined to the beam, may be employed.

[0023] (13) In the building structure according to (10), a configuration
such that the building structure further includes an energy dissipating
fuse which is arranged within a section formed by a plurality of steel
pipe pillars and which has a plurality of braces; and the energy
dissipating metal plate is provided at least one of a joint location
between the steel pipe pillars and the braces and the joint location
between the braces, may be employed.

Advantageous Effects of Invention

[0024] According to the energy dissipating metal plate according to (1),
it is provided on the transmission path of tensile force and compression
force between the first joint part and the second joint part and the
vibration dissipating parts having the slits is flexurally yielded to be
plastically deformed in early, and thereby, it is possible to exhibit
stable deformation energy dissipating performance with an increase in
proof stress being suppressed. By making the energy dissipating metal
plate exhibit the energy dissipating performance corresponding to the
relative displacement between the target members, the damage control
function can be effectively exhibited in the building structure in which
the energy dissipating metal plate is arranged.

[0025] In particular, in the present invention, as described in (2), in
the case where it is the single plate to be located between the target
members, it can be installed in a narrow gap into which it could not be
inserted up until now, and further, it can be applied to various
locations of the building structure.

[0026] Moreover, in the present invention, in the case where the length of
the vibration dissipating part in the direction orthogonal to a direction
of the relative displacement is made longer than a predetermined
dimension, bending moment, which occurs to both ends of the energy
dissipating metal plate, can be made greater, and it is possible to
easily make the vibration dissipating part yield flexurally. On the other
hand, in the case where the length of the vibration dissipating part in
the direction orthogonal to the direction of the relative displacement is
made shorter than the predetermined dimension, the vibration dissipating
part is yielded with the shearing force that occurs in the vibration
dissipating part. Ideally, it is preferable that the shape of slit hole
is a substantially rhombic shape so that a flexural yielding or a shear
yielding of the vibration dissipating part occurs.

[0027] Furthermore, in the case where precipitation-hardening or TRIP
processing (processing a metal plate having transformation-induced
plasticity) is performed so that the ratio of the yield proof stress to
the maximum proof stress is equal to or more than 4/5 as with the energy
dissipating metal plate described in (5), plastic deformation due to
flexural yielding and shear yielding can be easily made to occur over a
wide range in the vibration dissipating part. As a result, it is possible
to reliably obtain the effect of the present invention described above.

[0028] According to the building structure described in (10), it is
possible, by providing the energy dissipating metal plate described in
(1), to increase the level of damage control performance thereof.

BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG. 1 is a front view showing an embodiment of an energy
dissipating metal plate of the present invention.

[0030]FIG. 2A is a side view showing an attachment example of the energy
dissipating metal plate.

[0031]FIG. 2B is a side view showing another attachment example of the
energy dissipating metal plate.

[0032]FIG. 3A is a front view for describing an operation of the energy
dissipating metal plate.

[0033] FIG. 3B is a front view for describing an operation of the energy
dissipating metal plate.

[0034] FIG. 3C is a front view for describing an operation of the energy
dissipating metal plate.

[0035]FIG. 4A is a graph showing the results of a cyclic load test in a
case where the major axis of the slits of the energy dissipating metal
plate is made long in the B direction indicated in FIG. 3A.

[0036]FIG. 4B is a graph showing the results of a cyclic load test with
an energy dissipating metal plate of a comparative example.

[0037]FIG. 5 is a vertical sectional view of a portion of a building
structure according to the embodiment, spanning from the continuous
footing to the foundation of the building. In the figure, in order to
show the relative position relationship between the fasteners, the
fasteners that are actually separately-displaced in the page surface
depth direction are also shown on the sectional plane.

[0038]FIG. 6 is a C-C sectional view of FIG. 5. In the figure, in order
to show the relative position relationship between the fasteners, the
fasteners that are actually separately-displaced in the page surface
depth direction are also shown on the sectional plane.

[0039]FIG. 7 is a figure for describing the operational advantage of the
energy dissipating metal plate of the present embodiment.

[0040]FIG. 8 is a figure showing a modified example of the energy
dissipating metal plate, being a front view showing a case where the
insertion hole of fastener on the first joint part side is lengthened in
the B direction.

[0041]FIG. 9A is a front view showing an example of a building structure
in which the energy dissipating metal plate of the present embodiment is
arranged.

[0043] FIG. 10A is a side view showing another example of a building
structure in which the energy dissipating metal plate of the present
embodiment is arranged.

[0044] FIG. 10B is a side view showing still another example of a building
structure in which the energy dissipating metal plate of the present
embodiment is arranged.

[0045] FIG. 11 is a side view showing still another example of a building
structure in which the energy dissipating metal plate of the present
embodiment is arranged.

[0046]FIG. 12A is a figure showing still another example of a building
structure in which the energy dissipating metal plate of the present
embodiment is arranged, being a perspective view showing a state of being
applied to a connection between steel pipe pillars.

[0048] FIG. 12C is a figure showing still another example of a building
structure in which the energy dissipating metal plate of the present
embodiment is arranged, being a perspective view showing a state of being
applied to a beam joint.

[0049]FIG. 13 is a figure showing still another example of a building
structure in which the energy dissipating metal plate of the present
embodiment is arranged, being a front view showing an example of an
energy dissipating fuse.

[0050]FIG. 14A is a figure showing a configuration of an attachment to
the joint part on one end side of the energy dissipating fuse, being an
enlarged view of part F in FIG. 13.

[0051] FIG. 14B is a figure showing a joint mode of the energy dissipating
metal plate between adjacent braces, of the energy dissipating fuse,
being an enlarged view of part G in FIG. 13.

DESCRIPTION OF EMBODIMENTS

[0052] Hereunder, as an embodiment of the present invention, an energy
dissipating metal plate which joins a pair of target members and which
exhibits energy dissipating performance corresponding to the relative
displacement between the target members, is described in detail, with
reference to figures.

[0053] A configuration of an energy dissipating metal plate 1 of the
present embodiment is shown in FIG. 1. The energy dissipating metal plate
1 is such that in a single metal plate 41 serving as a base, there are
formed slits 65 (insertion holes) of a predetermined shape, and there are
allocated joint parts 46 and 47 to be attached to the target members. It
is assumed that the energy dissipating metal plate 1 joins a pair of the
target members. The target members of the present embodiment are one of
the constituents of a building structure. However, the energy dissipating
metal plate 1 of the present embodiment may be applied to a joint for
other purposes also.

[0054] The target members of the present embodiment may be such that, as
shown in the side view of FIG. 2A, both of one target member 42 and the
other target member 43 are positioned on one face side with respect to
the energy dissipating metal plate 1, or as shown in the side view of
FIG. 2B, the one target member 42 and the other target member 43 are
positioned on both face sides so as to sandwich the energy dissipating
metal plate 1 therebetween.

[0055] In both cases, the one target member 42 and the other target member
43 are displaced relatively to each other along a relative displacement
direction A in the event of an earthquake, etc. The energy dissipating
metal plate 1 is attached on the face of one target member 42 and on the
face of the other target member 43, which are relatively displaced along
such a relative displacement direction A. The energy dissipating metal
plate 1 exhibits the energy dissipating performance corresponding to the
relative displacement caused by vibration along the direction of the
relative displacement A between both of the target members 42 and 43.

[0056] Returning to description of FIG. 1, the energy dissipating metal
plate 1 to be attached to the pair of the target members 42 and 43 is
such that a pair of first joint parts 46 to be joined with the one target
member 42 and a second joint part 47 to be joined with the other target
member 43 are respectively allocated substantially parallel with each
other in a long strip form along the direction of the relative
displacement A, on the single metal plate 41. Between the first joint
parts 46 and the second joint part 47, there is respectively formed a
damping part 48 (vibration dissipating part) for suppressing an increase
in a proof stress after yielding.

[0057] The first joint parts 46 are formed so that a plurality of circular
holes 46h are arranged in a form of line and the first joint parts 46 are
allocated in two lines in positions substantially line-symmetric with
each other about the second joint part 47. That is to say, the first
joint parts 46 are allocated at both ends along a substantially
orthogonal direction B, which is substantially orthogonal to the
direction of the relative displacement A. The second joint part 47 is
positioned at the center of the joint parts 46. Since the first joint
parts 46 are arranged via the damping parts 48 with respect to the second
joint part 47, the damping parts 48 are also allocated at the positions
substantially line-symmetric with each other about the second joint part
47.

[0058] The first joint parts 46 are regions for being joined to the target
member 42 with fasteners (fastening members such as bolts, drill screws,
screws, and nails). The first joint parts 46 are not limited to specific
configurations such as fastener insertion holes, and they may be
pre-allocated planar regions where fasteners are absolutely scheduled to
be fixed thereon when being attached to the target member 42. That is to
say, in the case where the drill screws or the nails capable of fixing
the first joint part 46 with their sharp tip end by passing therethrough
in the plate thickness direction thereof to the target member 42 are
employed as fasteners, it is not necessary to pre-form the fastener
insertion holes in the first joint part 46. In the case, the flat region
for the drill screws or the nails, which serve as fasteners, to pass
therethrough serves as the first joint part 46, and by boring the flat
region with fasteners, it is possible to form the fastener insertion
holes and attach the fasteners simultaneously.

[0059] Moreover, in the case where the first joint parts 46 are assumed to
be joined by screwing the fasteners into the target member 42, the first
joint parts 46 may be configured as insertion holes for inserting the
fastener. In either case, the first joint parts 46 are allocated so as to
be vertically long along the direction of the relative displacement A (in
other words, so as to be formed in a strip shape along the direction of
the relative displacement A). In reality, the direction of the relative
displacement A is determined according to the arrangements of the target
members 42 and 43 to be attached. In a state in which the extending
direction of the strip shape formed by the first joint part 46, which is
preliminarily allocated in a strip foam, is positioned so as to align
with the direction of the relative displacement A of the target members
42 and 43, the energy dissipating metal plate 1 is attached to the target
members 42 and 43.

[0060] The second joint part 47 is a region for being joined to the target
member 43 with the fasteners (the fastening members such as the bolts,
the drill screws, the screws, and the nails). The second joint part 47 is
configured with a plurality of fastener insertion holes 49 that pass
through the metal plate 41 with the major axis thereof being along the
above B direction.

[0061] Meanwhile, the second joint part 47 is not limited to the above
case of being configured with the long circular fastener insertion holes
49, and may be configured with normal circular fastener insertion holes
49. Moreover, the second joint part 47 is not limited to specific
configurations such as the fastener insertion holes 49, and may be
pre-allocated planar regions where the fasteners are absolutely scheduled
to be fixed thereon when being attached to the target member 43. The
point is the same as the description of the first joint part 46, and
therefore, the description of this is omitted here. In either case, the
second joint part 47 is allocated so as to be vertically long toward the
direction of the relative displacement A (in other words, so as to be
formed in a strip shape along the direction of the relative displacement
A). For example, if the fastener insertion holes 49 are formed at a
plurality of locations at predetermined intervals along the direction of
the relative displacement A, the second joint part 47 is embodied as a
mode where it is allocated in a strip shape in the direction of the
relative displacement A.

[0062] The damping parts 48 of two lines are each configured as lines of a
plurality of slits 65. The slits 65 are such that several of them are at
least formed in a line form at predetermined intervals along the
direction of the relative displacement A. Meanwhile, the arrangement
intervals of the slits 65 are not limited to the case of being regular
intervals, and they may be random intervals.

[0063] The slits 65 may be any shape. However, it is preferably a shape
with a major axis being along the direction B. Moreover, although FIG. 1
shows, as an example, a case of the configuration with rhombus-shaped
slits 65, it is not limited to the shape, and it may be configured with a
rectangular shape, another polygonal shape, or an indeterminate shape.

[0064] By providing the type of slits 65 in the damping part 48, the yield
strength of at least the damping part 48 can be made lower than that of
other locations. Incidentally, among the slits 65 of two-lines, the slits
65 positioned at both ends of the direction of the relative displacement
A are configured to be connected with each other and as being slits 65a
and 65b with a major axis thereof being along the B direction.

[0065] Next, an operation of the energy dissipating metal plate 1 is
described. In the energy dissipating metal plate 1 configured as
described above, while the first joint parts 46 are attached to the
target member 42 with the fasteners (not shown in figure), the second
joint part 47 is attached to the target member 43 with the fasteners (not
shown in figure). In a case where a force caused by earthquake or the
like acts on the building structure, the target members 42 and 43 are
displaced relatively to each other along the direction of the relative
displacement A. When vibration occurs in the direction of the relative
displacement A, momentarily, for example as shown in FIG. 3A, the target
member 42 is displaced in the a1 direction and the target member 43 is
displaced in the a2 direction.

[0066] At this time, the first joint part 46 attached to the target member
42 is also displaced in the a1 direction. On the other hand, the second
joint part 47 attached to the target member 43 is displaced in the a2
direction. As a result, in the first joint part 46, stress σE
is transmitted in the direction shown with the small arrows in FIG. 3A.
In each process of the stress σE being transmitted, at
positions where the slits 65 are formed, a compression stress from the
slit 65 adjacent to one side thereof is transmitted, and a tensile stress
is transmitted toward the position where the slit 65 adjacent to the
other side thereof is formed. Consequently, the each moment is cancelled.
In this way, the stress σE is sequentially transmitted and the
compression force is eventually transmitted to the slit 65a side.

[0067] As a result, at the lower end part 52 of the energy dissipating
metal plate 1, the two-lines of first joint parts 46 attempt to move away
from each other along the B direction, and as shown in FIG. 3A, stress
σF for suppressing it is transmitted along the B direction and
in the direction opposing to each other. Since the stress σF
is transmitted from the end parts of the two-lines of first joint parts
46 in the directions opposing to each other, they offset each other just
at the substantially center of the lower end part 52. Moreover, also in
the upper end part 51, similarly, stress σG is loaded in
directions opposing to each other along the B direction, and therefore,
they are cancelled by each other.

[0068] That is to say, in the case where the target members 42 and 43 are
relatively displaced from each other along the direction of the relative
displacement A, the energy dissipating metal plate 1 can still offset the
stress σE and stress σF within the energy
dissipating metal plate 1 even if the stress σE and the stress
σF based on the relative displacement are transmitted.
Furthermore, also in the case where the target member 42 shifts in the a2
direction of FIG. 3A and the target member 43 is displaced in the a1
direction, when observing momentarily, the direction of the arrows of the
stress vectors mentioned above is simply reversed from the direction
shown in FIG. 3A, and as expected, the stress can offset each other
within the energy dissipating metal plate 1.

[0069] Moreover, stress σH is loaded on the second joint part
47 of the energy dissipating metal plate 1 according to the displacement
of the target member 43. As a result, as shown in FIG. 3A, shear stress
occurs between the stress on loaded on the first joint part 46 and the
stress σH loaded on the second joint part 47. Furthermore,
bending moment based on the shear deformation is loaded on the damping
parts 48, which serve as the joint parts between the first joint parts 46
and the second joint part 47. When the bending moment becomes greater
than a predetermined value, the damping parts 48 flexurally yields. In
addition, in damping parts 48, with the shape of the slit 65 made oval
with the major axis being along the B direction, the damping parts 48 can
be set to flexurally yield along the direction of the relative
displacement A according to the relative displacement between the target
members 42 and 43. As a result, in the present embodiment, it is possible
to realize the specific effect described below.

[0070] FIG. 3B shows a case where the stress σH is loaded as a
result of the displacement of the target member 43 with the first joint
parts 46 being fixed ends. Moreover, FIG. 3C shows a case where stress is
loaded as a result of the displacement of the target member 43 with the
first joint parts 46 being fixed ends. The second joint part 47 deforms
upward in the figure in the case of FIG. 3B, and it deforms downward in
the figure in the case of FIG. 3C. That is to say, the position of the
second joint part 47 is displaced relatively to the first joint parts 46,
and the shape of the slits 65, 65a, and 65b also deforms
upwardly/downwardly according to the displacement. When the type of
cyclic displacement occurs in the upward/downward directions of the
second joint part 47, the damping parts 48 flexurally yields, and the
energy dissipating metal plate 1 is plasticized to perform energy
dissipating. Also in the case, the stress σF and the stress
σG are offset with the above mechanism at both of the upper
end part 51 and the lower end part 52.

[0071]FIG. 4A shows the results of a cyclic load test with use of the
energy dissipating metal plate 1 of the present embodiment in which the
slits 65 has a major axis which is along the B direction indicated in
FIG. 3A, and FIG. 4B shows the results of cyclic load test of a steel
plate prepared as a comparative example. Incidentally, in the steel plate
of the comparative example, although the same material as that of the
energy dissipating metal plate 1 is used, there is no slit 65 provided
therein, and in addition, a rib is provided at the upper and lower end
edges of the steel plate so that it would not flexurally yield.

[0072] It can be understood from FIG. 4A that in the energy dissipating
metal plate 1 of the present embodiment, an increase in the proof stress
is suppressed, a hysteresis loop with a great area is drawn, and a high
level of hysteresis dissipation can be obtained. In contrast, in the
comparative example of FIG. 4B, it can be understood that the proof
stress increases.

[0073] Based on this, in the energy dissipating metal plate 1 of the
present embodiment, by making the damping parts 48 flexurally yield
early, it is possible to cause plastic deformation to occur, and thereby
stable deformation energy dissipating performance can be exhibited while
an increase in the proof stress is suppressed. By having the energy
dissipating metal plate 1 exhibit energy dissipating performance
corresponding to the relative displacement between the target members 42
and 43, it is possible to have the building structure with the energy
dissipating metal plate 1 arranged therein exhibit a damage control
function.

[0074] Furthermore, in the present embodiment, as the metal plate 41 that
configures the energy dissipating metal plate 1, there may be used a
steel plate that has been precipitation-hardened or trip-processed so
that a ratio of yield proof stress, which is a ratio of yield proof
stress to maximum proof stress, is equal to or more than 4/5. In this
case, the plastic deformation region due to the flexural yielding can be
expanded in the damping parts 48 without providing the slits 65, and it
is possible to realize the effected described above.

[0075] Meanwhile, only the fastener insertion holes 49 of the second joint
part 47 were provided as long holes. However, it is not limited to the
configuration, and only the fastener insertion holes in the first joint
parts 46, or the fastener insertion holes in both of the first joint
parts 46 and the second joint part 47 may be provided as long holes that
are long along the substantially orthogonal direction B. In this case,
unwanted stress would not occur in the damping parts 48, which serves as
a vibration dissipating part, when the target members 42 and 43 shift
relatively along the substantially orthogonal direction B.

Example 1

[0076]FIG. 5 is a figure showing Example 1 of the present invention,
showing an example of a building structure 5 having the above energy
dissipating metal plate 1 arranged therein. To describe in more detail,
an enlarged view of a vertical sectional configuration in the building
structure 5 spanning from a continuous footing 81 to a foundation 82 of
the building structure 5 is shown. Moreover, FIG. 6 shows a C-C sectional
view of FIG. 5. Furthermore, FIG. 7 shows a specific mode where the
energy dissipating metal plate 1 is arranged in the building structure 5.

[0077] The building structure 5 of the Example 1 is provided with the
continuous footing 81 and the foundation 82 arranged on the continuous
footing 81. Furthermore, a horizontal frame 83 which extends in the
horizontal direction and vertical frames 84 which extend in the
perpendicular direction are attached on the foundation 82. Moreover,
between the continuous footing 81 and the foundation 82, a gap with a
predetermined dimension serving as a ventilation hole 86 is formed. In
the Example 1, in the ventilation hole 86, the energy dissipating metal
plate 1 described above is installed.

[0078] As shown in FIG. 5 and FIG. 6, first joint parts 46 of the energy
dissipating metal plate 1 is fixed to the continuous footing 81 with
concrete nails 87 (fasteners). Moreover, the second joint part 47 is
fixed to the foundation 82 with screws 88 (fasteners). As shown in FIG.
7, the second joint part 47 is fixed to the foundation 82 by screwing the
screws 88, which are inserted into the screw holes 49 (fastener insertion
holes) with a major axis thereof being along the substantially orthogonal
direction B, into a lower face of the foundation 82.

[0079] That is to say, in the Example 1, the target member 42 to be joined
with the joint parts 46 serves as the continuous footing 81, and the
target member 43 to be joined with the second joint part 47 serves as the
foundation 82.

[0080] As shown in FIG. 7, in the case where the building structure 5
vibrates along the direction of the relative displacement A, it is
possible to exhibit the damage control effect described above. That is to
say, in the case where load caused by a small to moderate earthquake or
wind is loaded on the building structure 5, the energy dissipating metal
plate 1 can function as a highly rigid joint metal member. As a result,
without plastically deforming the energy dissipating metal plate 1, it is
possible to exhibit resistive force within a range of the elastic
deformation range thereof Moreover, if a large earthquake occurs, the
damping parts 48 (vibration dissipating parts) receive a cyclic load of
tensile stress and compression stress as described above and are
plasticized, and thereby, it is possible to exhibit the damping effect.

[0081] In contrast, if vibration occurs along the substantially orthogonal
direction B, the energy dissipating metal plate 1 does not exhibit the
damping effect described above. The reason for this is that since it is
screwed on the foundation 82 with the screws 88 being inserted into the
screw holes (long holes) 49 having a major axis being along the
substantially orthogonal direction B, the screws 88 simply reciprocate
within the screw holes 49 along the major axis direction thereof as a
result of vibration in the substantially orthogonal direction B, and no
particular deformation suppression function is exhibited. As a result, if
the vibration along the substantially orthogonal direction B occurs, the
foundation 82 also vibrates together along the substantially orthogonal
direction B on the energy dissipating metal plate 1.

[0082] Meanwhile, as shown in the modified example of FIG. 8, screw holes
91 with the major axis thereof being along the substantially orthogonal
direction B may be bored on the first joint parts 46 sides, while normal
circular screw holes 92 may be bored on the second joint part 47. Also
with the configuration, it is possible to obtain an effect similar to
that of the configuration described above. Furthermore, although it is
not shown in the figure, the screw holes of first joint parts 46 and the
screw holes of the second joint parts 47 may both be provided as screw
holes with the major axis thereof being along the substantially
orthogonal direction B. Also in the case, it is possible to obtain an
effect similar to that of the configuration described above.

[0083] Moreover, in the Example 1, the energy dissipating metal plate 1
may serve also as a spacer in the ventilation hole 86.

Example 2

[0084]FIG. 9A and FIG. 9B are figures showing Example 2 of the present
invention, showing an example of a building structure 4 in which an
energy dissipating metal plate 101 applied with the present invention is
arranged. To describe it in more detail, the figure shows an enlarged
view of a vertical sectional configuration in the building structure 4
spanning from a lower level 2 to an upper level 3.

[0085] In the building structure 4, on the lower level 2 side, there are
provided a lower level horizontal frame 11 that extends in the horizontal
direction, and a lower level vertical frame 12 that extends along the
perpendicular direction. The lower level horizontal frame 11 and the
lower level vertical frame 12 are joined with each other via a floor
joist 14 or the like arranged therebetween. Moreover, on an upper face of
the lower level horizontal frame 11, the floor joist 14 of the upper
level 3 is joined, and further, on an upper face of the floor joist 14, a
floor plate 15 of the upper level 3 is attached.

[0086] Furthermore, in the building structure 4, on the upper level 3
side, there are provided an upper level horizontal frame 16 that extends
in the horizontal direction and an upper level vertical frame 17 that
extends in the perpendicular direction, and the upper level horizontal
frame 16 and the upper level vertical frame 17 are joined with each
other.

[0087] In the building structure 4 having the above configuration, an
energy dissipating metal plate 101 applied with the present invention is
used. The energy dissipating metal plate 101 is such that, above and
below the center position of a metal plate 141P in the direction of the
relative displacement A, second joint parts 147 for joining to the upper
level vertical frame 17 and the lower level vertical frame 12 are
allocated.

[0088] The structure of the energy dissipating metal plate 101 of the
Example 2 is described. The energy dissipating metal plate 101 is a
single steel plate with a configuration such that a first energy
dissipating member 101A that joins the upper level vertical frame 17 and
the floor joist 14 and a second energy dissipating member 101B that joins
the floor joist 14 and the lower level vertical frame 12 are integrally
connected at a connection part 101a. Meanwhile, reference symbols 176
denote a pair of reinforcement members.

[0089] The first energy dissipating member 101A joins the upper level
vertical frame 17 and the floor joist 14 and exhibits energy dissipating
performance corresponding to the relative displacement along the
perpendicular direction between the upper level vertical frame 17 and the
floor joist 14. The first energy dissipating member 101A is provided
with: a second joint part 147 joined with the upper level vertical frame
17; a first joint part 146 joined with the floor joist 14; and damping
parts 148 (vibration dissipating parts) which are provided on a
transmission path of tensile force and compression force between the
first joint part 146 and the second joint part 147, and which have a
plurality of slits 165 formed therein. Each of the first joint part 146
and the second joint part 147 is a strip form substantially parallel with
the direction of the relative displacement A.

[0090] A pair of the damping parts 148 is arranged adjacent to both sides
of the second joint part 147. A pair of extension parts 150 that extend
along the direction of the relative displacement A at both outer sides of
the damping parts 148 are further provided. Furthermore, the first joint
part 146 is provided along the direction of the relative displacement A
so as to continue to both end parts of the extension parts 150.
Meanwhile, the transmission path in the Example 2 is a path that connects
the second joint parts 147, the damping parts 148, the extension parts
150, and the first joint part 146.

[0091] The second joint part 147 is joined to the upper level vertical
frame 17 by fixing fasteners (fastening members such as bolts, drill
screws, screws, and nails) inserted into a plurality of fastener
insertion holes formed in the second joint part 147 on the upper level
vertical frame 17.

[0092] Moreover, the first joint part 146 is joined to the floor joist 14
by fixing fasteners (fastening members such as bolts, drill screws,
screws, and nails) inserted into a plurality of fastener insertion holes
formed in the first joint part 146 on the floor joist 14.

[0093] The second energy dissipating member 101B joins the floor joist 14
and the lower level vertical frame 12 to exhibit energy dissipating
performance corresponding to the relative displacement along the
perpendicular direction between the floor joist 14 and the lower level
vertical frame 12. Meanwhile, the same constituents as those of the first
energy dissipating member 101A are given the same reference symbols, for
the following description.

[0094] The second energy dissipating member 101B is provided with: a
second joint part 147 joined to the lower level vertical frame 12; a
first joint part 146 joined to the floor joist 14; and damping parts 148
which are provided on a transmission path of tensile force and
compression force between the first joint part 146 and the second joint
part 147, and which have a plurality of slits 165 formed therein.

[0095] The second joint part 147 is joined to the lower level vertical
frame 12 by fixing fasteners (fastening members such as bolts, drill
screws, screws, and nails) inserted into a plurality of fastener
insertion holes formed in the second joint part 147 on the lower level
vertical frame 12.

[0096] The configurations of the second energy dissipating member 101B
other than those described above are the same as those of the first
energy dissipating member 101A, and therefore, the overlapping
descriptions thereof are omitted.

[0097] In the Example 2, the upper level vertical frame 17 and the lower
level vertical frame 12 correspond to the target member 43, and the floor
joist 14 corresponds to the target member 42.

[0098] As shown in FIG. 9A, in the case where the building structure 4
vibrates along the direction of the relative displacement A, it is
possible to obtain an operational advantage similar to that of the energy
dissipating metal plate 1.

[0099] That is to say, in the case where load caused by a small to
moderate earthquake or wind is loaded on the building structure 4, the
energy dissipating metal plate 101 can function as a highly rigid joint
metal member. As a result, without plastically deforming the energy
dissipating metal plate 101, it is possible to exhibit resistive force
within a range of the elastic deformation range thereof. Moreover, if a
large earthquake occurs, the damping parts 148 in four locations receive
a cyclic load of tensile stress and compression stress and are
plasticized, and thereby, it is possible to exhibit the damping effect.

[0100] A modified example of the Example 2 is shown in FIG. 10A.
Meanwhile, in the following description, points that differ from the
configurations described with FIG. 9A are primarily described, and the
rest of the configurations are treated as the same as those of FIG. 9A,
therefore omitting overlapping descriptions.

[0101] In the first energy dissipating member 101A of the modified
example, the second joint part 147 is arranged not between the damping
parts 148 but on both outer sides of the respective damping parts 148.
That is to say, no fastener insertion holes are formed between the
respective damping parts 148, and instead, on both outer sides of the
respective damping parts 148, there are formed a plurality of fastener
insertion holes 140 in a strip form along the direction of the relative
displacement A. By attaching the fasteners inserted in the fastener
insertion holes 140 to the upper level vertical frame 17, the first
energy dissipating member 101A is joined to the upper level vertical
frame 17.

[0102] Moreover, the second energy dissipating member 101B also has a
configuration similar to that of the first energy dissipating member 101A
of the modified example.

[0103] The transmission path in the modified example in the above
description is a path that connects the joint parts 147, the damping
parts 148, and the first joint part 146, and it is possible to obtain an
operational advantage similar to that of Example 2. In addition, in the
case where the floor joist 14, which serves as the target member 43, is
displaced along the direction of the relative displacement A, the stress
based on the displacement can be directly transmitted to the region 147a
between the damping parts 148.

[0104] Meanwhile, as shown in FIG. 10B, a reinforcement member 175
composed of a steel bar such as a rib may be further provided so as to be
arranged through both of the region 147a between the damping parts 148 in
the first energy dissipating member 101A and the region 147a between the
damping parts 148 in the second energy dissipating member 101B, to
thereby provide reinforcement. As a result, in the case where a small to
moderate earthquake occurs or where load caused by wind is received, the
energy dissipating metal plate 101 can function as a highly rigid strip
metal material. As a result, without plastically deforming the energy
dissipating metal plate 101, it is possible to improve resistive force
within a range of the elastic deformation range thereof. Moreover, if a
large earthquake occurs, the damping parts 148 are plasticized with
respect to the cyclic load of tensile stress and compression stress as
described above, and thereby, it is possible to exhibit the energy
dissipating effect.

Example 3

[0105] FIG. 11 shows an example of a building structure 7 in which an
energy dissipating metal plate 301 applied with the present invention is
arranged, and more specifically, it shows an enlarged view of the
vicinity of a beam 201 of the foundation of the building structure 7.

[0106] On the foundation side of the building structure 7, there are
provided a beam 201 and a horizontal frame 202 that extend in the
horizontal direction, and the beam 201 and the horizontal frame 202 are
joined with each other. Moreover, there is further provided a vertical
frame 203 that extends in the perpendicular direction from the horizontal
frame 202 toward the upper level. The beam 201 and the vertical frame 203
are joined with each other via the energy dissipating metal plate 301.

[0107] The structure of the energy dissipating metal plate 301 of the
Example 3 is described. The energy dissipating metal plate 301 joins the
beam 201 and the vertical frame 203, to exhibit energy dissipating
performance corresponding to the relative displacement along the
perpendicular direction between the beam 201 and the vertical frame 203.
The energy dissipating metal plate 301 is provided with: a second joint
part 347 joined to the beam 201; a first joint part 346 joined with the
vertical frame 203; and two lines of damping parts 348 (vibration
dissipating parts) which are provided on a transmission path of tensile
force and compression force between the first joint part 346 and the
second joint part 347, and which have a plurality of slits 365 formed
therein. Each of the first joint part 346 and the second joint part 347
is a strip form substantially parallel with the direction of the relative
displacement A.

[0108] A pair of the damping parts 348 is arranged adjacent to both sides
of the second joint part 347. A pair of extension parts 350 that extend
along the direction of the relative displacement A at both outer sides of
the damping parts 348 is further provided. Furthermore, the first joint
part 346 is provided along the direction of the relative displacement A
so as to continue to end parts of the extension parts 350. Meanwhile, the
transmission path is a path that connects the second joint part 347, the
damping parts 348, the extension parts 350, and the first joint part 346.

[0109] The second joint part 347 is joined with the beam 201 by fixing
fasteners (fastening members such as bolts, drill screws, screws, and
nails) inserted into a plurality of fastener insertion holes 312 formed
in the second joint part 347 on the beam 201. On the other hand, the
first joint part 346 is joined with the vertical frame 203 by fixing the
fasteners, which are inserted in the plurality of fastener insertion
holes 311 formed in the first joint part 346, onto the vertical frame
203.

[0110] Meanwhile, in the Example 3, the target member 42 with respect to
the energy dissipating metal plate 301 corresponds to the vertical frame
203, and the target member 43 corresponds to the beam 201 of the
foundation.

[0111] As shown in FIG. 11, at the location where the energy dissipating
metal plate 301 is arranged in the building structure 7, if
perpendicularly upward tensile load from the vertical frame 203 is loaded
in the first joint part 346, stress σP is loaded with respect
to the first joint part 346. As a result, stress σX is loaded
to both of the outer sides of damping parts 348 in which the plurality of
slits 365 are formed. Accordingly, shear stress occurs between the stress
σX and stress σQ loaded on the second joint part
347, and as a result, bending moment based on the shear deformation is
loaded on damping parts 348. When the bending moment becomes greater than
a predetermined value, the energy dissipating metal plate 301 flexurally
yields.

Example 4

[0112]FIG. 12A and FIG. 12B show an example of a steel pipe pillar 100 in
which energy dissipating metal plates 401 applied with the present
invention are arranged. The steel pipe pillar 100 is configured such that
a pair of steel pipes 101P having a square shape in section and a
predetermined plate thickness is connected with each other with four of
the energy dissipating metal plates 401. That is to say, a single energy
dissipating metal plate 401 is provided on each of the four side faces of
steel pipes 101P, and thereby the end parts of the steel pipes 101P are
joined with each other.

[0113] The structure of the energy dissipating metal plate 401 of the
Example 4 is described. The energy dissipating metal plate 401 is a
single steel plate in which a first energy dissipating member 401A to be
attached to one of the steel pipes 101P and a second energy dissipating
member 401B to be attached to the other steel pipe 101P are integrally
connected. Meanwhile, reference symbol 476 denotes a pair of strip-form
reinforcement members (steel bars such as ribs).

[0114] The first energy dissipating member 401A is provided with: a first
joint part 447 joined with the one steel pipe 101P; a pair of damping
parts 448 (vibration dissipating parts) which are arranged on both sides
of the first joint part 447 and which have a plurality of slits 465
formed therein; and extension parts 450 which extend from both of the
outer sides of the damping parts 448 along the direction of the relative
displacement A.

[0115] The second energy dissipating member 401B is provided with: a
second joint part 447a joined with the other steel pipe 101P; a pair of
damping parts 448a (vibration dissipating parts) which are arranged on
both sides of the second joint part 447a and which have a plurality of
slits 465a formed therein; and extension parts 450a which extend from
both of the outer sides of the damping parts 448a along the direction of
the relative displacement A.

[0116] The first energy dissipating member 401A and second energy
dissipating member 401B form a single steel plate with their extension
parts 450 being butted with each other. Meanwhile, the transmission path
in the Example 4 is a path that connects the first joint part 447, the
damping parts 448, the extension parts 450, the extension parts 450a, the
damping parts 448a, and the second joint part 447a. Meanwhile, each of
the first joint part 447 and the second joint part 447a is a strip form
substantially parallel with the direction of the relative displacement A.

[0117] The first joint part 447 is joined to the one steel pipe 101P by
fixing fasteners (fastening members such as bolts, drill screws, and
screws) inserted into a plurality of fastener insertion holes 487 formed
in the first joint part 447 on the one steel pipe 101P. Moreover, the
second joint part 447a is joined with the other steel pipe 101P by fixing
fasteners inserted into a plurality of fastener insertion holes 487a
formed in the second joint part 447a on the other steel pipe 101P.

[0118] As a result, as shown in FIG. 12A and FIG. 12B, in the case where
the steel pipes 101P vibrate along the direction of the relative
displacement A, it is possible to exhibit the damage control effect.

[0119] That is to say, in the case where load caused by a small to
moderate earthquake or wind is loaded on the steel pipe pillar 100, the
four energy dissipating metal plates 401 can function as highly rigid
joint metal members. As a result, without plastically deforming the
energy dissipating metal plates 401, it is possible to exhibit resistive
force within a range of the elastic deformation range thereof. Moreover,
if a large earthquake occurs, the damping parts 448 and 448a receive a
cyclic load of tensile stress and compression stress and are plasticized,
and thereby, it is possible to exhibit the damping effect.

[0120] In the Example 4, since the energy dissipating metal plate 401 is
provided on each face of the steel pipe 101P, the energy dissipating
metal plate 401 exhibits the operational advantage described above with
respect to vibrations of all directions that may occur to the steel pipe
101P, and it contributes to suppress vibration energy. However, the
energy dissipating metal plate 401 may be attached only on some side
faces rather than providing it on all of the four side faces of the steel
pipe 101P. Moreover, in the Example 4, although an example of the case
where the extension parts 450 are reinforced by the reinforcement members
476, the reinforcement members 476 may be omitted.

Example 5

[0121] FIG. 12C shows an example in which two energy dissipating metal
plates 401 described in Example 4 above are used for joining a pair of
beams 561. The beams 561 are of a square shape in section or H shape in
section and have a predetermined plate thickness, and interspace between
a pair of beams 561 being adjacent to each other is connected.

[0122] The energy dissipating metal plates 401 are such that the first
joint part 447 thereof is fixed on one of the beams 561 by fasteners
(fastening members such as bolts, drill screws, and screws) while the
second joint part 447a thereof is fixed on the other beam 561 by
fasteners, to thereby connect the pair of beams 561.

[0123] As a result, in the case where the beams 561 vibrate along the
direction of the relative displacement A as shown in FIG. 12C, it is
possible to exhibit a damage control effect similar to that of Example 4.

[0124] In the Example 5, the energy dissipating metal plate 401 is
provided on each of the upper and lower faces of the beams 561. As a
result, the energy dissipating metal plate 401 exhibits the above
operational advantage with respect to vibration of upwardly/downwardly
bending directions that occur to the beams 561, to thereby contribute to
suppress vibration energy. However, it is not limited to the
configuration of providing the energy dissipating metal plate 401 on both
of the upper and lower faces of the beams 561, and it may be attached
only on one of the faces. Moreover, in the Example 5, although an example
of the case where the extension parts 450 are reinforced by the
reinforcement members 476, the reinforcement members 476 may be omitted.

Example 6

[0125]FIG. 13 to FIG. 14B show an energy dissipating fuse 610 that uses
the energy dissipating metal plates 301 of Example 3 described using FIG.
11.

[0126] The energy dissipating fuse 610 is arranged in an X shape along the
diagonal lines of a square section formed with a pair of steel pipe
pillars 622 and a pair of beams 623. At each intersection of each steel
pipe pillar 622 and each beam 623, there is provided a joint member 625.
The joint members 625 are respectively fixed strongly by means of welding
or bolt joining.

[0127] One end of the energy dissipating fuse 610 is attached to any one
of the joint members 625, and the other end is attached to a brace 631 of
another energy dissipating fuse 610. FIG. 14A shows an attachment to the
joint member 625 on one end side of the energy dissipating fuse 610. FIG.
14B shows joining of the energy dissipating metal plate 301 between the
braces 631 adjacent to each other.

[0128] The energy dissipating fuse 610 is configured with a brace 631 and
energy dissipating metal plates 301. That is to say, a single unit of the
energy dissipating fuse 610 is configured with the brace 631 and the
energy dissipating metal plates 301 connected to both ends thereof. In
the mode shown in FIG. 14A, the first joint part 346 of the energy
dissipating metal plate 301 is attached to the joint member 625, and the
second joint part 347 is attached to the brace 631. In the case where
vibration occurs along the direction of the relative displacement A,
vibration energy dissipating is realized based on the mechanism described
above.

[0129] On the other hand, in the joining locations between the braces 631,
as shown in FIG. 14B, the second joint part 347 of the energy dissipating
metal plate 301 is joined with one brace 631, and the first joint part
346 of the energy dissipating metal plate 301 is joined with the other
brace 631. In the case where vibration occurs along the direction of the
relative displacement A, vibration energy dissipating is realized based
on the mechanism described above.

INDUSTRIAL APPLICABILITY

[0130] According to the present invention, it is possible to provide an
energy dissipating metal plate which, in particular, can be arranged in
an extremely narrow gap and which can be applied to various locations of
a building structure, and a building structure which uses the energy
dissipating metal plate.

REFERENCE SIGNS LIST

[0131] 1, 101, 301, 401: Energy dissipating metal plate

[0132] 4, 5, 7:
Building structure

[0133] 12: Lower level vertical frame (target member,
wall frame)

[0134] 14: Floor joist (target member)

[0135] 17: Upper level
vertical frame (target member, wall frame)

[0136] 42, 43: Target member

[0137] 46, 146, 346, 447: First joint part

[0138] 46h: First insertion
hole

[0139] 47, 147, 347, 447a: Second joint part

[0140] 48, 148, 348,
448: Damping part (vibration dissipating part)

[0141] 49: Second
insertion hole

[0142] 65, 65a, 65b, 165, 365, 465: Slit

[0143] 81:
Continuous footing (target member)

[0144] 82: Foundation (target member)

[0145] 87: First fastener

[0146] 88: Second fastener

[0147] 101P: Steel
pipe (target member)

[0148] 150, 350: Extension part

[0149] 175, 176:
Reinforcement member

[0150] 201: Beam (target member, beam material)

[0151] 203: Vertical frame (target member, wall frame)

[0152] 561: Beam
(target member)

[0153] 625: Joint member (target member)

[0154] 631:
Brace (target member)

Patent applications by Fuminobu Ozaki, Tokyo JP

Patent applications by Yoshimichi Kawai, Tokyo JP

Patent applications in class Relative motion means between a structure and its foundation

Patent applications in all subclasses Relative motion means between a structure and its foundation